//
//  WFUserAccount.swift
//  WangFangWeiBo
//
//  Created by 王方 on 16/7/10.
//  Copyright © 2016年 wf. All rights reserved.
//

import UIKit

class WFUserAccount: NSObject,NSCoding {
    //用户授权的唯一标示
    var access_token:String?
    //过期秒数
    var expires_in:NSTimeInterval = 0 {
        didSet {
            expiresDate = NSDate().dateByAddingTimeInterval(expires_in)
        }
     }
    //过期时间
    var expiresDate:NSDate?
    //授权用户的uid
    var uid:Int64 = 0
    //用户名
    var name:String?
    //用户头像
    var avatar_large:String?
    
    //kvc构造函数
    init(dic:[String:AnyObject]) {
        super.init()
        setValuesForKeysWithDictionary(dic)
    }
    //防止字段不崩溃
    override func setValue(value: AnyObject?, forUndefinedKey key: String) {
        
    }
    //重写description
   override var description:String {
        let keys = ["access_token", "expires_in", "uid", "name", "avatar_large"]
        return dictionaryWithValuesForKeys(keys).description
    }
    
    //归档的方法
    func encodeWithCoder(aCoder: NSCoder) {
        aCoder.encodeObject(access_token, forKey: "access_token")
        aCoder.encodeObject(expiresDate, forKey: "expiresDate")
        aCoder.encodeInt64(uid, forKey: "uid")
        aCoder.encodeObject(name, forKey: "name")
        aCoder.encodeObject(avatar_large, forKey: "avatar_large")
    }
    
    
    //解档的方法
    required init?(coder aDecoder: NSCoder) {
        access_token = aDecoder.decodeObjectForKey("access_token") as? String
        expiresDate = aDecoder.decodeObjectForKey("expiresDate") as? NSDate
        uid = aDecoder.decodeInt64ForKey("uid")
        name = aDecoder.decodeObjectForKey("name") as? String
        avatar_large = aDecoder.decodeObjectForKey("avatar_large") as? String
        
    }
    
    //保存用户对象
    func saveUserAccount()->Bool{
        let path = (NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).last! as NSString).stringByAppendingPathComponent("userAccount.archive")
        print(path)
       let result = NSKeyedArchiver.archiveRootObject(self, toFile: path)
        return result
     }
    
    //通过路径读取用户对象
    class func loadUserAccount()->WFUserAccount? {
        let path = (NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).last! as NSString).stringByAppendingPathComponent("userAccount.archive")
        return (NSKeyedUnarchiver.unarchiveObjectWithFile(path) as? WFUserAccount)
    }
}
